The Disk,valve, cataloged under National Stock Number 4820-01-057-6563, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Compressor Engineering Corp. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-057-6563 |
| Primary Part Number | CE-R58996 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Compressor Engineering Corp |
| Status | ACTIVE |
| Shank Diameter | 0.689 INCHES NOMINAL IN |
| Flange Diameter | 2.278 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 42.0 DEGREES NOMINAL |
| Media for Which Designed | AIR |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CE-R58996 | Compressor Engineering Corp (USA) |
| Reference | Meaning |
|---|---|
| IR58996 | 5/9 Secondary reference U.S. Government activity |
| 22K6PH | 5/9 Secondary reference U.S. Government activity |
| IR58996 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| IR58996 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 1R58996 | 5/9 Secondary reference Compressor Engineering Corp |
| R58996 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-057-6563 is a Disk,valve, manufactured by Compressor Engineering Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-057-6563 has 1 manufacturer part number on file: CE-R58996 (Compressor Engineering Corp).
Key specifications for CE-R58996: Shank Diameter: 0.689 INCHES NOMINAL IN; Flange Diameter: 2.278 INCHES NOMINAL IN; Overall Height: 1.845 INCHES NOMINAL IN; Style Designator: POPPET. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.